CN101987736A - Preparation method of high-purity strontium carbonate - Google Patents
Preparation method of high-purity strontium carbonate Download PDFInfo
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- CN101987736A CN101987736A CN2009103052191A CN200910305219A CN101987736A CN 101987736 A CN101987736 A CN 101987736A CN 2009103052191 A CN2009103052191 A CN 2009103052191A CN 200910305219 A CN200910305219 A CN 200910305219A CN 101987736 A CN101987736 A CN 101987736A
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Abstract
The invention belongs to a preparation method of high-purity strontium carbonate, comprising the following steps: (1) ammonium carbonate solution preparation; (2) strontium nitrate purification: placing the strontium nitrate into distilled water; heating the mixture to 60-70 DEG C; dissolving, filtering, and concentrating; controlling the relative density to be 18-20 Be; drying after cooling and crystallizing to obtain the purified strontium nitrate for later use; (3) impurity barium ions removing: placing the purified strontium nitrate into the distilled water; heating mixture to 40-50 DEG C; dissolving, adding sulfuric acid, stirring, precipitating for 2-3h, and filtering to obtain filter liquor; and (4) high-purity strontium carbonate synthesis: heating the filter liquor obtained in the step (3) to 60-70 DEG C; adding the ammonium carbonate solution obtained in the step (1); controlling the pH value at 8.5-9; and standing for 4-5h to obtain strontium nitrate precipitation; drying after pumping to dry to obtain the high-purity strontium carbonate finish product. The prepared strontium carbonate finish product has high purity and low impurity content, and the preparation process has simple process steps and higher production efficiency.
Description
Technical field
The invention belongs to the mineral compound field, especially a kind of preparation method of high-purity strontium carbonate.
Background technology
High-purity strontium carbonate is used very extensive in electronic industry, especially in the manufacturing of colour television set picture tube and in the manufacturing of electromagnet.The high-purity strontium carbonate main production methods is a double decomposition at present, it utilizes Strontium Sulphate solution and sodium carbonate solution reaction to generate metabisulfite solution and Strontium carbonate powder precipitation, the Strontium carbonate powder purity that this kind method is produced is lower, foreign matter content is high, can not satisfy the needs of high request product in the electronic industry.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the preparation method of a kind of purity height, foreign matter content is low, processing step is simple, production efficiency is higher high-purity strontium carbonate is provided.
The present invention is achieved through the following technical solutions:
A kind of preparation method of high-purity strontium carbonate, the step of its preparation method is:
(1), the preparation of sal volatile: distilled water is put into plastic tank feeding ammonia make ammoniacal liquor, relative density is controlled at 18～20Be, feeds carbon dioxide gas again, and pH value is controlled at 9～9.5, and it is standby to obtain sal volatile;
(2), purification strontium nitrate: strontium nitrate is put into distilled water, be heated to 60～70 ℃ and dissolve, filter, concentrate, relative density is controlled at 18～20Be, dries behind the crystallisation by cooling, and the strontium nitrate that obtains purifying is standby;
(3), removal of impurity barium ion: the purification strontium nitrate is put into distilled water, be heated to 40～50 ℃ and dissolve, add sulfuric acid then and stir, precipitate 2～3 hours, filter, obtain filtrate;
(4), high-purity strontium carbonate is synthetic: the filtrate in the step (3) is heated to 60～70 ℃, add the sal volatile in the step (1) then, pH value is controlled at 8.5～9, leaves standstill 4～5 hours, drain and obtain the Strontium carbonate powder precipitation, carry out drying then and obtain the high-purity strontium carbonate finished product.
And strontium nitrate, distilled water and vitriolic weight ratio are 1: 3: 0.001 in the described step (3).
And drying is to dry earlier in the described step (4), puts into 200 ℃ of oven dry of baking oven again.
Advantage of the present invention and beneficial effect are:
1, the preparation method of high-purity strontium carbonate adopts volatile salt and the reaction of purification strontium nitrate to make, and this kind method can access the high Strontium carbonate powder of purity, and the preparation method is simple, and cost is lower, and is easy to control.
2, purity height of the present invention, foreign matter content is low, processing step is simple, be the preparation method of the higher high-purity strontium carbonate of a kind of production efficiency.
Embodiment
The present invention is described in further detail by following examples.Need to prove: following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
Embodiment 1
A kind of preparation method of high-purity strontium carbonate, the step of its preparation method is:
(1), the preparation of sal volatile: 10Kg distilled water is put into plastic tank feeding ammonia make ammoniacal liquor, relative density is controlled at 18Be, feeds carbon dioxide gas again, and pH value is controlled at 9.5, and it is standby to obtain sal volatile;
(2), purification strontium nitrate: the 2Kg strontium nitrate is put into 3000ml distilled water, be heated to 60 ℃ and dissolve, filter, concentrate, relative density is controlled at 20Be, dries behind the crystallisation by cooling, and the strontium nitrate that obtains purifying is standby;
(3), removal of impurity barium ion: the 1Kg strontium nitrate of purifying is put into 3000ml distilled water, be heated to 40 ℃ and dissolve, add 1g sulfuric acid then and stir, precipitate 2 hours, filtration obtains filtrate;
(4), high-purity strontium carbonate is synthetic: the filtrate in the step (3) is heated to 60 ℃, adds the sal volatile in the step (1) then, pH value is controlled at 9, left standstill 5 hours, and drained and obtain the Strontium carbonate powder precipitation, dry earlier then, put into 200 ℃ of oven dry of baking oven again, obtain the high-purity strontium carbonate finished product.
Embodiment 2
A kind of preparation method of high-purity strontium carbonate, the step of its preparation method is:
(1), the preparation of sal volatile: 12Kg distilled water is put into plastic tank feeding ammonia make ammoniacal liquor, relative density is controlled at 20Be, feeds carbon dioxide gas again, and pH value is controlled at 9.2, and it is standby to obtain sal volatile;
(2), purification strontium nitrate: the 2Kg strontium nitrate is put into 2500ml distilled water, be heated to 70 ℃ and dissolve, filter, concentrate, relative density is controlled at 18Be, dries behind the crystallisation by cooling, and the strontium nitrate that obtains purifying is standby;
(3), removal of impurity barium ion: the 1.1Kg strontium nitrate of purifying is put into 3300ml distilled water, be heated to 50 ℃ and dissolve, add 1.1g sulfuric acid then and stir, precipitate 3 hours, filtration obtains filtrate;
(4), high-purity strontium carbonate is synthetic: the filtrate in the step (3) is heated to 70 ℃, adds the sal volatile in the step (1) then, pH value is controlled at 8.8, left standstill 4 hours, drain and obtain the Strontium carbonate powder precipitation, dry earlier then, put into 200 ℃ of oven dry of baking oven again and obtain the high-purity strontium carbonate finished product.
Claims (3)
1. the preparation method of a high-purity strontium carbonate, it is characterized in that: this preparation method's step is:
(1), the preparation of sal volatile: distilled water is put into plastic tank feeding ammonia make ammoniacal liquor, relative density is controlled at 18～20Be, feeds carbon dioxide gas again, and pH value is controlled at 9～9.5, and it is standby to obtain sal volatile;
(2), purification strontium nitrate: strontium nitrate is put into distilled water, be heated to 60～70 ℃ and dissolve, filter, concentrate, relative density is controlled at 18～20Be, dries behind the crystallisation by cooling, and the strontium nitrate that obtains purifying is standby;
(3), removal of impurity barium ion: the purification strontium nitrate is put into distilled water, be heated to 40～50 ℃ and dissolve, add sulfuric acid then and stir, precipitate 2～3 hours, filter, obtain filtrate;
(4), high-purity strontium carbonate is synthetic: the filtrate in the step (3) is heated to 60～70 ℃, add the sal volatile in the step (1) then, pH value is controlled at 8.5～9, leaves standstill 4～5 hours, obtain Strontium carbonate powder precipitation, drain and carry out drying then and obtain the high-purity strontium carbonate finished product.
2. the preparation method of high-purity strontium carbonate according to claim 1 is characterized in that: strontium nitrate, distilled water and vitriolic weight ratio are 1: 3: 0.001 in the described step (3).
3. the preparation method of high-purity strontium carbonate according to claim 1 is characterized in that: dry in the described step (4) for drying earlier, put into 200 ℃ of oven dry of baking oven again.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009103052191A CN101987736A (en) | 2009-08-05 | 2009-08-05 | Preparation method of high-purity strontium carbonate |
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| CN2009103052191A CN101987736A (en) | 2009-08-05 | 2009-08-05 | Preparation method of high-purity strontium carbonate |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502750A (en) * | 2011-10-25 | 2012-06-20 | 中国科学院青海盐湖研究所 | Process for producing barium sulfate byproduct in process of removing barium from yellow water |
| CN103351015A (en) * | 2013-06-14 | 2013-10-16 | 南京金焰锶业有限公司 | Preparation method of high-purity strontium carbonate |
| CN103663528A (en) * | 2013-11-29 | 2014-03-26 | 贵州红星发展股份有限公司 | Narrow-distribution and large-specific-surface-area high-purity strontium carbonate and preparation method thereof |
| CN103754915A (en) * | 2013-12-13 | 2014-04-30 | 绵阳市远达新材料有限公司 | Preparation method of strontium carbonate |
| CN103787397A (en) * | 2013-12-13 | 2014-05-14 | 绵阳市远达新材料有限公司 | Preparation method for high-purity strontium carbonate |
| CN105001677A (en) * | 2015-08-13 | 2015-10-28 | 重庆元和精细化工股份有限公司 | Strontium nitrate modification method |
| CN105384186A (en) * | 2015-12-10 | 2016-03-09 | 重庆三零三科技有限公司 | Synthesis method of high purity strontium salt |
Citations (4)
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| EP0025237A1 (en) * | 1979-08-13 | 1981-03-18 | FMC Corporation | Method for producing strontium nitrate |
| JPH0977517A (en) * | 1995-09-13 | 1997-03-25 | Japan Energy Corp | Production of high purity strontium carbonate |
| JPH0977516A (en) * | 1995-09-13 | 1997-03-25 | Japan Energy Corp | Production of high purity strontium carbonate |
| CN1394809A (en) * | 2002-08-02 | 2003-02-05 | 武汉大学 | Method for preparing strontium carbonate |
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2009
- 2009-08-05 CN CN2009103052191A patent/CN101987736A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0025237A1 (en) * | 1979-08-13 | 1981-03-18 | FMC Corporation | Method for producing strontium nitrate |
| JPH0977517A (en) * | 1995-09-13 | 1997-03-25 | Japan Energy Corp | Production of high purity strontium carbonate |
| JPH0977516A (en) * | 1995-09-13 | 1997-03-25 | Japan Energy Corp | Production of high purity strontium carbonate |
| CN1394809A (en) * | 2002-08-02 | 2003-02-05 | 武汉大学 | Method for preparing strontium carbonate |
Non-Patent Citations (1)
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| 陈鸿彬: "《高纯试剂提纯与制备》", 31 May 1983, 上海科学技术出版社 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502750A (en) * | 2011-10-25 | 2012-06-20 | 中国科学院青海盐湖研究所 | Process for producing barium sulfate byproduct in process of removing barium from yellow water |
| CN103351015A (en) * | 2013-06-14 | 2013-10-16 | 南京金焰锶业有限公司 | Preparation method of high-purity strontium carbonate |
| CN103663528A (en) * | 2013-11-29 | 2014-03-26 | 贵州红星发展股份有限公司 | Narrow-distribution and large-specific-surface-area high-purity strontium carbonate and preparation method thereof |
| CN103754915A (en) * | 2013-12-13 | 2014-04-30 | 绵阳市远达新材料有限公司 | Preparation method of strontium carbonate |
| CN103787397A (en) * | 2013-12-13 | 2014-05-14 | 绵阳市远达新材料有限公司 | Preparation method for high-purity strontium carbonate |
| CN103754915B (en) * | 2013-12-13 | 2015-04-29 | 绵阳市远达新材料有限公司 | Preparation method of strontium carbonate |
| CN103787397B (en) * | 2013-12-13 | 2015-07-01 | 绵阳市远达新材料有限公司 | Preparation method for high-purity strontium carbonate |
| CN105001677A (en) * | 2015-08-13 | 2015-10-28 | 重庆元和精细化工股份有限公司 | Strontium nitrate modification method |
| CN105384186A (en) * | 2015-12-10 | 2016-03-09 | 重庆三零三科技有限公司 | Synthesis method of high purity strontium salt |
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Application publication date: 20110323 |